研究目的
Investigating the influence of welding angle on weld morphologies and porosity characteristics in laser-arc hybrid welding of AA2219 aluminum alloy.
研究成果
The study concluded that the upward sloping and vertical welding (USVW) performed better than downward sloping and vertical welding (DSVW) in terms of weld morphology and porosity characteristics. The stability of the welding process and the quality of the weld were found to be significantly influenced by the gravity-laser angle (β). The findings suggest that optimizing the welding angle and arc current can improve weld quality and reduce porosity in laser-arc hybrid welding of aluminum alloys.
研究不足
The study is limited to AA2219 aluminum alloy and may not be directly applicable to other materials. The effects of welding angle on weld quality are complex and may require further optimization for different welding conditions.
1：Experimental Design and Method Selection:
The study involved laser-arc hybrid welding of AA2219 aluminum alloy with varying welding angles. A high-speed camera was used to observe the welding process.
2：Sample Selection and Data Sources:
5-mm-thick AA2219-T87 Al alloy was used as the welding material.
3：List of Experimental Equipment and Materials:
An IPG YLS-6000 fiber laser, KUKA KR60-HA high-precision mechanical arm, and Fronius TPS4000 arc welding power source were employed. The filling wire was ER5087 with a diameter of
4：6 mm. Experimental Procedures and Operational Workflow:
The welding angle was varied, and the welding process was observed using a high-speed camera. The distance between the droplet transitional position and the keyhole was measured.
5：Data Analysis Methods:
The weld surface shape was examined, and metallurgical specimens were prepared for microstructure and fracture surface examination by optical and scanning electron microscopy. The porosity was assessed by X-ray nondestructive testing.
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